The equation is (0.75)9 + c = 20.
<h2>Linear system</h2>
It is a system of an equation in which the highest power of the variable is always 1. A one-dimension figure that has no width. It is a combination of infinite points side by side.
<h3>Simplification</h3>
Simplification is to make something easier to do or understand and to make something less complicated.
Given
Jimmy is selling used books at a yard sale.
A customer buys 9 books at a cost of $0.75 each and pays with a $20.00 bill.
<h3>To find </h3>
The equation.
<h3>How to find the equation?</h3>
A customer buys 9 books at a cost of $0.75 each and pays with a $20.00 bill.
Let c be the profit.
Profit = Selling price - cost price
c = 20 - (0.75)9
On simplifying, we get
(0.75)9 + c = 20
So the equation is (0.75)9 + c = 20.
More about the linear system link is given below.
brainly.com/question/20379472
Answer:
$ 8.74
Step-by-step explanation:
After Yu spends the 2.80, he is left with 17.49
Half of 17.49 is 8.74
Answer:
8
Step-by-step explanation:
diameter is the radius times 2
Answer:
Solution to system is
x = 6 and y= 4
S.set={6,4}
Step-by-step explanation:
The given equations are
x + 3y = 18 ................(i)
x + 2y=14 .................(ii)
Subtracting both equation
(x+3y)-(x+2y)=18-14
x+3y-x-2y = 4
y = 4
put the value of y in equation (i)
the equation becomes
x + 3(4) = 18
x + 12 = 18
subtracting 12 from both sides
x + 12 -12 = 18-12
x =6
Solution to system is
x = 6 and y= 4
S.set={6,4}
